A store is selling a black pair of shoes for $79.45 and a brown pair of shoes for $133.99. the black pair of shoes is marked up
by 44%, and the brown pair of shoes is marked down by 21%. which pair of shoes is more expensive, and how much more expensive is it? round all dollar values to the nearest cent. a. the black pair costs $6.82 more than the brown pair.
b. the black pair costs $8.56 more than the brown pair.
c. the brown pair costs $9.72 more than the black pair.
d. the brown pair costs $12.54 more than the black pair.
Black Shoes: Price = $79.45 Markup = 44% of 79.45 = 0.44 x 79.45 = $34.96 Price after Markup= $79.45 + $34.96 = $114.41
Brown Shoes: Price = $133.99 Mark down = 21% of 133.99 = $28.14 Price after Mark down = $133.99 - $28.14 = $105.85
Difference in cost = $114.41 - $105.85 = $8.56
-------------------------------------------------------------------------------------------------------- Answer: The black pair costs $8.56 more than the brown pair. (Answer B) --------------------------------------------------------------------------------------------------------
The maximum mileage per gallon for the compact car is determined by taking the first derivative of the given equation and equate to zero. The differentiated form is m's = -0.05 s + 2.45 = 0; s is equal to 49 seconds. substituting this s, m is equal to 30.025 miles/gallon.
